Processing Machinery
1 views
PPO Shutdown Temperature Graded Management
Problem Phenomenon
【Problem Phenomenon】PPO shutdown durations vary, and product quality fluctuates greatly after restart
Cause Analysis
SABIC gives a shutdown grading procedure: maintain barrel temperature within 15 minutes; cool down 50℃ for 15 minutes-2 hours; cool down to 180℃ for 2-12 hours; empty and turn off heating over 12 hours
Solution
Execute cooling or emptying according to shutdown duration grading; at restart, heat up according to the procedure and confirm melt state; establish shutdown records and restart checklists; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
PPO shutdown is handled in grades of 15 min/2 h/12 h; proceduralization avoids arbitrary decisions; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!